Resolve light-source position/direction when updated

Source/core/svg/SVGFELightElement.cpp

 /*
  * Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org>
  * Copyright (C) 2005 Oliver Hunt <oliver@nerget.com>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 44 matching lines @@
     addToPropertyMap(m_pointsAtZ);
     addToPropertyMap(m_specularExponent);
     addToPropertyMap(m_limitingConeAngle);
 }
 
 SVGFELightElement* SVGFELightElement::findLightElement(const SVGElement& svgElement)
 {
     return Traversal<SVGFELightElement>::firstChild(svgElement);
 }
 
+FloatPoint3D SVGFELightElement::position() const
+{
+    return FloatPoint3D(x()->currentValue()->value(), y()->currentValue()->value(), z()->currentValue()->value());
+}
+
+FloatPoint3D SVGFELightElement::pointsAt() const
+{
+    return FloatPoint3D(pointsAtX()->currentValue()->value(), pointsAtY()->currentValue()->value(), pointsAtZ()->currentValue()->value());
+}
+
 bool SVGFELightElement::isSupportedAttribute(const QualifiedName& attrName)
 {
     DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ());
     if (supportedAttributes.isEmpty()) {
         supportedAttributes.add(SVGNames::azimuthAttr);
         supportedAttributes.add(SVGNames::elevationAttr);
         supportedAttributes.add(SVGNames::xAttr);
         supportedAttributes.add(SVGNames::yAttr);
         supportedAttributes.add(SVGNames::zAttr);
         supportedAttributes.add(SVGNames::pointsAtXAttr);
@@ skipping 87 matching lines @@
     if (!change.byParser) {
         if (ContainerNode* parent = parentNode()) {
             RenderObject* renderer = parent->renderer();
             if (renderer && renderer->isSVGResourceFilterPrimitive())
                 RenderSVGResource::markForLayoutAndParentResourceInvalidation(renderer);
         }
     }
 }
 
 }